Quote - (Whoops I massively crossposted. Here I'm responding to the idea that you can do gamma in post alone.)

Well, not exactly. You need to un-gamma correct all the incoming material first - texture maps, colors entered in the material room, etc. If you don't, you can't actually get accurate lighting, because you're starting with wrong numbers.

It seems to me that vendors need to start disclosing their material settings prior to purchase by consumers.  Otherwise your image could be a hodge-podge.  I know what  your thinking.....  let the artists correct everything... "buyer beware".

Don